Electric telegraphy.



No. 65|,0|3. v Patented June 5, 1900. KITSEE.

ELECTRIC TELEGRAPHY.

(Application filed May 20, 1896.) (No Model.)

I IIIII/IIIIIIIIIIIIIIIIIIIIIIII/A T0 SOURCE OF CURRENT r0 SOURCEOFCURRENT Witnessex. Inventor.

' ITED raises ssreivoa rooHAR as 1-trauma-m A H A Ysruorncarron formingpart of Letters Patent No. canola, dated June a, moo.

' Myinvention relates to electric telegraphy.-'

itsobject is to convert the rays of a receiver L consisting of avacuunutube into sound or to record.

, Broadly speaking, myinvention consistsin the conversion of theglow-rays of the vacuuni-tube, generated therein with the aid of an'interrupted or alternating current, into 1'5 sound or record.

Referring to the drawings, Figures 1 and 2 are diagrammatic viewsembodying my invention, and,Fig. 3 is a sectional view of a globe of amodified form.

In Fig. 1, .A is a'vacuum-globe or similar device provided, as isusually the case, with r the two terminals of a circuit connected to asourceofcurrent. InproximitytotheglobeA is the selenium-stick or cell B,connected with one of its terminals tothe positive pole of the battery0. The other terminal of theselenium-cell B connects with one end of thecoil of the electromagnet D. GlobeAand seleniumcellBare inclosed inthedark chamber A. In

the circuit with the cell B is the battery 0 and electromagnet D.Connected to the same Inclosed in the dark chamber A and in seriesbattery is the secondseleniu-m-cell B.

with said cell is the electromagnet D'. "lo 5 persons versed in theartit will be at once apparent that if resistance of B and D plus theircircuit is alike to the resistance of B and D" plus their circuit theflow of the 'current in both circuits will be equal and the soelectromagnets D and D will exert, if oppositely wound, anequally-opposing force on an armature placed at equal distance betweenthem, and such armature will therefore be at rest; but should, throughany cause whatsoever, the resistance of one of the two circuits belowered the flow of the current through both circuits will be an unequalone and an armature placed between both electromagnets will be attractedthrough the greater force of one or the other. Now it is'well known thatelenium in its crystalline state is very sen- "s pu hoi iniquit 20.1096.

sum a. 5921335. no n sitive to the action of light and, as was proven byexperiments, the rays of the vacu u m-globo lowerthe resistance of suchselenium even more than would be the case under ordinary illumination ofsame strength. As long,thorcfore, as the globe A is not traversed by theelectrical current the conditions of both the dark chambers A and A. areequal;. but as soon as the terminals of the globe A are connectedto thesource of current the inner space of said globe becomesilluminons,theroby lowering the resistance of the selenium-cell l3 andas a result destroying the equilibrium between the two circuits. Betweenthe two electromagnets D and D. is placed the armature R, connected tothe springs d" (2 This armature is provided with a contact-point d, inproximity to which is placed the adjustable contact-point d. The lowerpart of the mov able armature is connected to one pole of the battery G,the other pole of which connects toone terminal of the electromaguet ofthesounder' F, the other terminal of said electro- -magnet beingconnected to the adj ustable contact-point d. It telegraphing orsignaling is done according to the Morse or alphabetical code, a shorterglow-time representing a dot and longer glow-time representing a dash,it is obvious that the armature R will, if the adjustments are properlymade, close the circuit containing the local sounder F in correspondencewith the'glow of the globe A. lVe therefore have, as far as thereceiving operator is concerned, the usual sound-receiver. It is alsoself-evident that instead of or in conjunction with the sounder F anywellknown recording instrument may be placed inthe circuit.

In Fig. 2 I have placed the sounder F in direct circuit with theselenium-cell B, so as to illustrate the probability of translating thelightsignals into sound-signals without the addition of the relay, asillustrated in Eig. 1.

In Fig. 3 the selenium-cell B is placed in the inner space of the globeA. In allcases,

but more so in the last instancethatis, when the selenium is placed inthe inner space of the globe-its resistance is greatly lessened, even ifthe light-rays of the vacuumglobe are not perceptible to the naked eye.

Having now described .my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In electricity, a device fol-transforming the luminosity of avacuum-globe into sound or record, consisting of a vacuum-globeconnected to a source of rapidly recurring or alternating impulses ofelectricity, at second circiiit containing a generator of electricity, atranslating device and selenium, said selenium being placed in suitablerelation to the action of ,said vacuum-globe.

2. In electricity, at translating device consisting of avacuum globe ordevice similar iuits action contaiuingseleniuunthe vacuumglohe and theselenium being adapted each to he connected to a separate circuitcontaining generators of electricity and translating devices.

3. In electricity a flevicc for changing or altering the'flow of acurrent in a local circuit, which consists of a vacuum-globe connectedto a source of rapidly recurring or alternating impulses,' a localcircuit containing a t-ranslating'd evice, generators of electricity andselenium, said selenium being placed in juxtaposition to saidvacuum-globe.

"4, In a system of telegraphy, a receiver consisting of'a vacuum-globe,a. local circuit containing a translating device and battery,

ISIDOR KI'ISE I.

subscribing witnesses.

Witnesses:

W LLACE B. Enmmms, R. M. TOPHAM.

